Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 681 [Rate centres in NPA 681] [Dial plan for NPA 681]

NXX: 550

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
681-550 A Walkersville WV CLBGWVMAXVX  449F ONVOY, LLC - WV 256      
681-550 0 Walkersville WV   145J TERRA NOVA TELECOM INC. 256   2025-07-10   
681-550 4 Walkersville WV CLBGWVMAXVX  449F ONVOY, LLC - WV 256   2020-12-06   
681-550 5 Walkersville WV CLBGWVMAXVX  449F ONVOY, LLC - WV 256   2020-12-06   
681-550 6 Walkersville WV CLBGWVMAXVX  449F ONVOY, LLC - WV 256   2019-02-23   
681-550 8 Walkersville WV CLBGWVMA9MD  624H ONVOY SPECTRUM, LLC 256   2021-06-05   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.